mirror of
https://github.com/minio/minio.git
synced 2024-12-25 14:45:54 -05:00
697 lines
20 KiB
Go
697 lines
20 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"net/http"
|
|
"strings"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/minio/minio/internal/logger"
|
|
iampolicy "github.com/minio/pkg/iam/policy"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/client_golang/prometheus/promhttp"
|
|
)
|
|
|
|
var (
|
|
httpRequestsDuration = prometheus.NewHistogramVec(
|
|
prometheus.HistogramOpts{
|
|
Name: "s3_ttfb_seconds",
|
|
Help: "Time taken by requests served by current MinIO server instance",
|
|
Buckets: []float64{.05, .1, .25, .5, 1, 2.5, 5, 10},
|
|
},
|
|
[]string{"api"},
|
|
)
|
|
minioVersionInfo = prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: "minio",
|
|
Name: "version_info",
|
|
Help: "Version of current MinIO server instance",
|
|
},
|
|
[]string{
|
|
// current version
|
|
"version",
|
|
// commit-id of the current version
|
|
"commit",
|
|
},
|
|
)
|
|
)
|
|
|
|
const (
|
|
healMetricsNamespace = "self_heal"
|
|
gatewayNamespace = "gateway"
|
|
cacheNamespace = "cache"
|
|
s3Namespace = "s3"
|
|
bucketNamespace = "bucket"
|
|
minioNamespace = "minio"
|
|
diskNamespace = "disk"
|
|
interNodeNamespace = "internode"
|
|
)
|
|
|
|
func init() {
|
|
prometheus.MustRegister(httpRequestsDuration)
|
|
prometheus.MustRegister(newMinioCollector())
|
|
prometheus.MustRegister(minioVersionInfo)
|
|
}
|
|
|
|
// newMinioCollector describes the collector
|
|
// and returns reference of minioCollector
|
|
// It creates the Prometheus Description which is used
|
|
// to define metric and help string
|
|
func newMinioCollector() *minioCollector {
|
|
return &minioCollector{
|
|
desc: prometheus.NewDesc("minio_stats", "Statistics exposed by MinIO server", nil, nil),
|
|
}
|
|
}
|
|
|
|
// minioCollector is the Custom Collector
|
|
type minioCollector struct {
|
|
desc *prometheus.Desc
|
|
}
|
|
|
|
// Describe sends the super-set of all possible descriptors of metrics
|
|
func (c *minioCollector) Describe(ch chan<- *prometheus.Desc) {
|
|
ch <- c.desc
|
|
}
|
|
|
|
// Collect is called by the Prometheus registry when collecting metrics.
|
|
func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
|
|
// Expose MinIO's version information
|
|
minioVersionInfo.WithLabelValues(Version, CommitID).Set(1.0)
|
|
|
|
storageMetricsPrometheus(ch)
|
|
nodeHealthMetricsPrometheus(ch)
|
|
bucketUsageMetricsPrometheus(ch)
|
|
networkMetricsPrometheus(ch)
|
|
httpMetricsPrometheus(ch)
|
|
cacheMetricsPrometheus(ch)
|
|
gatewayMetricsPrometheus(ch)
|
|
healingMetricsPrometheus(ch)
|
|
}
|
|
|
|
func nodeHealthMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
if globalIsGateway {
|
|
return
|
|
}
|
|
|
|
nodesUp, nodesDown := GetPeerOnlineCount()
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "nodes", "online"),
|
|
"Total number of MinIO nodes online",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(nodesUp),
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "nodes", "offline"),
|
|
"Total number of MinIO nodes offline",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(nodesDown),
|
|
)
|
|
}
|
|
|
|
// collects healing specific metrics for MinIO instance in Prometheus specific format
|
|
// and sends to given channel
|
|
func healingMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
if !globalIsErasure {
|
|
return
|
|
}
|
|
bgSeq, exists := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
|
|
if !exists {
|
|
return
|
|
}
|
|
|
|
var dur time.Duration
|
|
if !bgSeq.lastHealActivity.IsZero() {
|
|
dur = time.Since(bgSeq.lastHealActivity)
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(healMetricsNamespace, "time", "since_last_activity"),
|
|
"Time elapsed (in nano seconds) since last self healing activity. This is set to -1 until initial self heal activity",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(dur),
|
|
)
|
|
for k, v := range bgSeq.getScannedItemsMap() {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(healMetricsNamespace, "objects", "scanned"),
|
|
"Objects scanned in current self healing run",
|
|
[]string{"type"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(v), string(k),
|
|
)
|
|
}
|
|
for k, v := range bgSeq.getHealedItemsMap() {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(healMetricsNamespace, "objects", "healed"),
|
|
"Objects healed in current self healing run",
|
|
[]string{"type"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(v), string(k),
|
|
)
|
|
}
|
|
for k, v := range bgSeq.gethealFailedItemsMap() {
|
|
// healFailedItemsMap stores the endpoint and volume state separated by comma,
|
|
// split the fields and pass to channel at correct index
|
|
s := strings.Split(k, ",")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(healMetricsNamespace, "objects", "heal_failed"),
|
|
"Objects for which healing failed in current self healing run",
|
|
[]string{"mount_path", "volume_status"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(v), s[0], s[1],
|
|
)
|
|
}
|
|
}
|
|
|
|
// collects gateway specific metrics for MinIO instance in Prometheus specific format
|
|
// and sends to given channel
|
|
func gatewayMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
if !globalIsGateway || (globalGatewayName != S3BackendGateway && globalGatewayName != AzureBackendGateway && globalGatewayName != GCSBackendGateway) {
|
|
return
|
|
}
|
|
|
|
objLayer := newObjectLayerFn()
|
|
// Service not initialized yet
|
|
if objLayer == nil {
|
|
return
|
|
}
|
|
|
|
m, err := objLayer.GetMetrics(GlobalContext)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "bytes_received"),
|
|
"Total number of bytes received by current MinIO Gateway "+globalGatewayName+" backend",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(m.GetBytesReceived()),
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "bytes_sent"),
|
|
"Total number of bytes sent by current MinIO Gateway to "+globalGatewayName+" backend",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(m.GetBytesSent()),
|
|
)
|
|
s := m.GetRequests()
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
|
|
"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
|
|
[]string{"method"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(atomic.LoadUint64(&s.Get)),
|
|
http.MethodGet,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
|
|
"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
|
|
[]string{"method"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(atomic.LoadUint64(&s.Head)),
|
|
http.MethodHead,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
|
|
"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
|
|
[]string{"method"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(atomic.LoadUint64(&s.Put)),
|
|
http.MethodPut,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
|
|
"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
|
|
[]string{"method"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(atomic.LoadUint64(&s.Post)),
|
|
http.MethodPost,
|
|
)
|
|
}
|
|
|
|
// collects cache metrics for MinIO server in Prometheus specific format
|
|
// and sends to given channel
|
|
func cacheMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
cacheObjLayer := newCachedObjectLayerFn()
|
|
// Service not initialized yet
|
|
if cacheObjLayer == nil {
|
|
return
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(cacheNamespace, "hits", "total"),
|
|
"Total number of disk cache hits in current MinIO instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(cacheObjLayer.CacheStats().getHits()),
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(cacheNamespace, "misses", "total"),
|
|
"Total number of disk cache misses in current MinIO instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(cacheObjLayer.CacheStats().getMisses()),
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(cacheNamespace, "data", "served"),
|
|
"Total number of bytes served from cache of current MinIO instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(cacheObjLayer.CacheStats().getBytesServed()),
|
|
)
|
|
for _, cdStats := range cacheObjLayer.CacheStats().GetDiskStats() {
|
|
// Cache disk usage percentage
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(cacheNamespace, "usage", "percent"),
|
|
"Total percentage cache usage",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(cdStats.UsagePercent),
|
|
cdStats.Dir,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(cacheNamespace, "usage", "high"),
|
|
"Indicates cache usage is high or low, relative to current cache 'quota' settings",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(cdStats.UsageState),
|
|
cdStats.Dir,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("cache", "usage", "size"),
|
|
"Indicates current cache usage in bytes",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(cdStats.UsageSize),
|
|
cdStats.Dir,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("cache", "total", "size"),
|
|
"Indicates total size of cache disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(cdStats.TotalCapacity),
|
|
cdStats.Dir,
|
|
)
|
|
}
|
|
}
|
|
|
|
// collects http metrics for MinIO server in Prometheus specific format
|
|
// and sends to given channel
|
|
func httpMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
httpStats := globalHTTPStats.toServerHTTPStats()
|
|
|
|
for api, value := range httpStats.CurrentS3Requests.APIStats {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "requests", "current"),
|
|
"Total number of running s3 requests in current MinIO server instance",
|
|
[]string{"api"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(value),
|
|
api,
|
|
)
|
|
}
|
|
|
|
for api, value := range httpStats.TotalS3Requests.APIStats {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "requests", "total"),
|
|
"Total number of s3 requests in current MinIO server instance",
|
|
[]string{"api"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(value),
|
|
api,
|
|
)
|
|
}
|
|
|
|
for api, value := range httpStats.TotalS3Errors.APIStats {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "errors", "total"),
|
|
"Total number of s3 errors in current MinIO server instance",
|
|
[]string{"api"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(value),
|
|
api,
|
|
)
|
|
}
|
|
|
|
for api, value := range httpStats.TotalS3Canceled.APIStats {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "canceled", "total"),
|
|
"Total number of client canceled s3 request in current MinIO server instance",
|
|
[]string{"api"}, nil),
|
|
prometheus.CounterValue,
|
|
float64(value),
|
|
api,
|
|
)
|
|
}
|
|
}
|
|
|
|
// collects network metrics for MinIO server in Prometheus specific format
|
|
// and sends to given channel
|
|
func networkMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
connStats := globalConnStats.toServerConnStats()
|
|
|
|
// Network Sent/Received Bytes (internode)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
|
|
"Total number of bytes sent to the other peer nodes by current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(connStats.TotalOutputBytes),
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(interNodeNamespace, "rx", "bytes_total"),
|
|
"Total number of internode bytes received by current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(connStats.TotalInputBytes),
|
|
)
|
|
|
|
// Network Sent/Received Bytes (Outbound)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "tx", "bytes_total"),
|
|
"Total number of s3 bytes sent by current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(connStats.S3OutputBytes),
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(s3Namespace, "rx", "bytes_total"),
|
|
"Total number of s3 bytes received by current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.CounterValue,
|
|
float64(connStats.S3InputBytes),
|
|
)
|
|
}
|
|
|
|
// Populates prometheus with bucket usage metrics, this metrics
|
|
// is only enabled if scanner is enabled.
|
|
func bucketUsageMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
objLayer := newObjectLayerFn()
|
|
// Service not initialized yet
|
|
if objLayer == nil {
|
|
return
|
|
}
|
|
|
|
if globalIsGateway {
|
|
return
|
|
}
|
|
|
|
dataUsageInfo, err := loadDataUsageFromBackend(GlobalContext, objLayer)
|
|
if err != nil {
|
|
return
|
|
}
|
|
// data usage has not captured any data yet.
|
|
if dataUsageInfo.LastUpdate.IsZero() {
|
|
return
|
|
}
|
|
|
|
for bucket, usageInfo := range dataUsageInfo.BucketsUsage {
|
|
stat := getLatestReplicationStats(bucket, usageInfo)
|
|
// Total space used by bucket
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "usage", "size"),
|
|
"Total bucket size",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(usageInfo.Size),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "objects", "count"),
|
|
"Total number of objects in a bucket",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(usageInfo.ObjectsCount),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "failed_size"),
|
|
"Total capacity failed to replicate at least once",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.FailedSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "successful_size"),
|
|
"Total capacity replicated to destination",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.ReplicatedSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "received_size"),
|
|
"Total capacity replicated to this instance",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.ReplicaSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "failed_count"),
|
|
"Total replication operations failed",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.FailedCount),
|
|
bucket,
|
|
)
|
|
for k, v := range usageInfo.ObjectSizesHistogram {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "objects", "histogram"),
|
|
"Total number of objects of different sizes in a bucket",
|
|
[]string{"bucket", "object_size"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(v),
|
|
bucket,
|
|
k,
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
// collects storage metrics for MinIO server in Prometheus specific format
|
|
// and sends to given channel
|
|
func storageMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
objLayer := newObjectLayerFn()
|
|
// Service not initialized yet
|
|
if objLayer == nil {
|
|
return
|
|
}
|
|
|
|
if globalIsGateway {
|
|
return
|
|
}
|
|
|
|
server := getLocalServerProperty(globalEndpoints, &http.Request{
|
|
Host: globalLocalNodeName,
|
|
})
|
|
|
|
onlineDisks, offlineDisks := getOnlineOfflineDisksStats(server.Disks)
|
|
totalDisks := offlineDisks.Merge(onlineDisks)
|
|
|
|
// Report total capacity
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_raw", "total"),
|
|
"Total capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(GetTotalCapacity(server.Disks)),
|
|
)
|
|
|
|
// Report total capacity free
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_raw_free", "total"),
|
|
"Total free capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(GetTotalCapacityFree(server.Disks)),
|
|
)
|
|
|
|
s, _ := objLayer.StorageInfo(GlobalContext)
|
|
// Report total usable capacity
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_usable", "total"),
|
|
"Total usable capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
GetTotalUsableCapacity(server.Disks, s),
|
|
)
|
|
// Report total usable capacity free
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_usable_free", "total"),
|
|
"Total free usable capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
GetTotalUsableCapacityFree(server.Disks, s),
|
|
)
|
|
|
|
// MinIO Offline Disks per node
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "disks", "offline"),
|
|
"Total number of offline disks in current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(offlineDisks.Sum()),
|
|
)
|
|
|
|
// MinIO Total Disks per node
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "disks", "total"),
|
|
"Total number of disks for current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(totalDisks.Sum()),
|
|
)
|
|
|
|
for _, disk := range server.Disks {
|
|
// Total disk usage by the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "used"),
|
|
"Total disk storage used on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.UsedSpace),
|
|
disk.DrivePath,
|
|
)
|
|
|
|
// Total available space in the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "available"),
|
|
"Total available space left on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.AvailableSpace),
|
|
disk.DrivePath,
|
|
)
|
|
|
|
// Total storage space of the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "total"),
|
|
"Total space on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.TotalSpace),
|
|
disk.DrivePath,
|
|
)
|
|
}
|
|
}
|
|
|
|
func metricsHandler() http.Handler {
|
|
registry := prometheus.NewRegistry()
|
|
|
|
err := registry.Register(minioVersionInfo)
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
err = registry.Register(httpRequestsDuration)
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
err = registry.Register(newMinioCollector())
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
gatherers := prometheus.Gatherers{
|
|
prometheus.DefaultGatherer,
|
|
registry,
|
|
}
|
|
// Delegate http serving to Prometheus client library, which will call collector.Collect.
|
|
return promhttp.InstrumentMetricHandler(
|
|
registry,
|
|
promhttp.HandlerFor(gatherers,
|
|
promhttp.HandlerOpts{
|
|
ErrorHandling: promhttp.ContinueOnError,
|
|
}),
|
|
)
|
|
}
|
|
|
|
// AuthMiddleware checks if the bearer token is valid and authorized.
|
|
func AuthMiddleware(h http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
claims, groups, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil || !claims.VerifyIssuer("prometheus", true) {
|
|
w.WriteHeader(http.StatusForbidden)
|
|
return
|
|
}
|
|
// For authenticated users apply IAM policy.
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.AccessKey,
|
|
Groups: groups,
|
|
Action: iampolicy.PrometheusAdminAction,
|
|
ConditionValues: getConditionValues(r, "", claims.AccessKey, claims.Map()),
|
|
IsOwner: owner,
|
|
Claims: claims.Map(),
|
|
}) {
|
|
w.WriteHeader(http.StatusForbidden)
|
|
return
|
|
}
|
|
h.ServeHTTP(w, r)
|
|
})
|
|
}
|